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CVE-2026-2920 Not scored

GStreamer ASF Demuxer Heap-based Buffer Overflow Remote Code Execution Vulnerability

GStreamer ASF Demuxer Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GStreamer. Interaction with this library is required to exploit this vulnerability but attack vectors may vary depending on the implementation. The specific flaw exists within the processing of stream headers within ASF files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-28843.

Exploit probability 0.8%
Published March 13, 2026
Required by Not available
Last source change July 23, 2026

02 / AFFECTED SOFTWARE

Affected packages

Unknown Unknown

191 explicit affected versions

03 / CONNECTIONS

Connected vulnerabilities

related ALSA-2026:19024
related ALSA-2026:19180
related ALSA-2026:6259
related ALSA-2026:6300
related ALSA-2026:6750
related OPENSUSE-SU-2026:20402-1
related SUSE-SU-2026:0998-1
related SUSE-SU-2026:20915-1

04 / EVIDENCE

Source records

Open Source Vulnerabilities CVE-2026-2920

GStreamer ASF Demuxer Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GStreamer. Interaction with this library is required to exploit this vulnerability but attack vectors may vary depending on the implementation. The specific flaw exists within the processing of stream headers within ASF files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-28843.

View original source

05 / REFERENCES

Further evidence